ACURA TL 1995 Service Repair Manual

Precautions/Procedures
SRS Uni t Precaution s
• Tak e extr a car e whe n paintin g o r doin g bod y wor k i n
th e are a belo w th e dashboard . Avoi d direc t exposur e
of th e SR S uni t o r wirin g t o hea t guns , welding , o r
sprayin g equipment .
• Disconnec t th e airba g connector(s ) befor e discon -
nectin g SR S harnes s connector s (se e pag e 24-12 ). O n
'95-9 6 models , connec t th e shor t connecto r t o th e
fron t passenger' s airba g connector .
• Afte r an y degre e o f fronta l bod y damage , o r afte r a
collisio n withou t airba g deployment , inspec t th e SR S
uni t fo r physica l damage . I f i t i s dented , cracked , o r
deformed , replac e it .
Inspectio n Afte r Deploymen t
After a collisio n i n whic h th e airbag s wer e deployed ,
replac e th e SR S unit , an d inspec t th e following :
1 . Inspec t al l th e SR S wir e harnesses . Replace , don' t
repair , an y damage d harnesses .
2 . Inspec t th e cabl e ree l fo r hea t damage . I f ther e is an y
damage , replac e th e cabl e reel .
3 . Afte r th e vehicl e i s completel y repaired , tur n th e
ignitio n switc h on . I f th e SR S indicato r ligh t come s
o n fo r abou t si x second s an d the n goe s off , th e SR S
syste m is OK . I f th e indicato r ligh t doe s no t functio n
properly , g o t o SR S Troubleshooting .
• B e sur e th e SR S uni t i s installe d securely .
• D o no t disassembl e th e SR S unit .
• Stor e th e SR S uni t i n a coo l (les s tha n abou t 104°F /
40°C ) an d dr y (les s tha n 80 % humidity , n o moisture )
place . D o no t spil l wate r o r oi l o n th e SR S unit , an d
kee p it awa y fro m dust .
• Durin g installatio n o r replacement , b e carefu l no t t o
bum p (impac t wrench , hammer , etc. ) th e are a aroun d
th e SR S unit . Th e airbag s coul d accidentall y deplo y
an d caus e damag e o r injury .
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Wiring Precaution s
• Neve r attemp t t o modify , splic e o r repai r SR S wiring .
NOTE : SR S wirin g ca n b e identifie d b y specia l yello w
oute r covering .
• B e sur e to instal l th e harnes s wire s s o tha t the y ar e no t
pinche d o r interferin g wit h othe r parts .
• Mak e sur e al l SR S groun d location s ar e clea n an d
ground s ar e securel y fastene d fo r optimu m metal-to -
meta l contact . Poo r groundin g ca n caus e intermitten t
problem s tha t ar e difficul t t o diagnose . Disconnectin
g th e SR S Connecto r a t th e Under-das h
Fuse/Relay Box :
CAUTION : Avoi d breakin g th e connector ; it' s double -
locked.
1. Firs t lif t th e connecto r li d wit h a thi n screwdriver , the n
pres s th e connecto r ta b down , an d pul l th e connecto r
out.
2. T o reinstal l th e connector , pus h it int o positio n unti l i t
clicks , the n clos e it s lid .
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Precautions/Procedures
Spring-loaded Loc k Connecto r
Some SR S syste m connector s hav e a spring-loade d
lock .
Disconnectin g
T o releas e th e lock , pul l th e spring-loade d sleev e towar d
th e sto p whil e holdin g th e opposit e hal f o f th e connector .
The n pul l th e connecto r halve s apart .
NOTE : B e sur e t o pul l o n th e sleev e an d no t o n th e con -
necto r hal f itself . Connectin
g
Hol d th e pawl-sid e connecto r half , an d pres s o n th e
bac k o f th e sleeve-sid e connecto r hal f i n th e directio n
shown . A s th e tw o connecto r halve s ar e presse d
together , th e sleev e is pushe d bac k b y th e pawl .
NOTE : D o no t touc h th e sleeve .
2 . Whe n th e connecto r halve s ar e completel y connected ,
th e paw l i s released , an d th e spring-loade d sleev e
lock s th e connector .
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Spring-loaded Loc k Connecto r wit h
Built-i n Shor t Contac t
The driver' s airba g ('95-9 8 models ) an d fron t passen -
ger' s airba g ('97-9 8 models ) hav e a spring-loade d loc k
connecto r wit h a built-i n shor t contact . Whe n thi s con -
necto r i s disconnected , th e powe r termina l an d th e
groun d termina l i n th e airba g connecto r ar e automati -
call y shorted .
Backprobin g Spring-loade d Loc k
Connector s
• Whe n checkin g voltag e o r resistanc e o n thi s typ e o f
connecto r th e firs t time , i t i s necessar y t o remov e th e
retaine r t o inser t teste r probe s fro m th e wir e side . I t
i s no t necessar y t o reinstal l th e remove d retainer ; th e
terminal s wil l sta y locke d in th e connecto r housing .
• T o remov e th e retainer , inser t a fla t ti p screwdrive r
betwee n connecto r bod y an d retainer , an d carefull y
pr y ou t th e retainer . Tak e car e no t t o brea k th e con -
nector .
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Precautions/Procedures
Disconnecting th e Airba g Connector s
To preven t accidenta l airba g deployment , tur n th e ignitio n switc h OFF , disconnec t th e negativ e batter y
cable , an d wai t thre e minute s befor e disconnectin g an y SR S connectors .
• Befor e disconnectin g th e SR S mai n harnes s (A ) fro m th e SR S unit , disconnec t bot h airbag s (C , D) .
• Befor e disconnectin g th e cabl e ree l 2 P connecto r (B) , disconnec t th e driver' s airba g 2 P connecto r (C) .
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Steering-related Precautions
Steering Whee l an d Cabl e Ree l Alignmen t
NOTE : T o avoi d misalignmen t o f th e steerin g whee l o n
reassembly , mak e sur e th e wheel s ar e turne d straigh t
ahea d befor e removin g th e steerin g wheel .
'95-9 6 Models : Rotat e th e cabl e ree l clockwis e unti l i t
stops . The n rotat e i t counterclockwis e (approximatel y
two turns ) unti l th e hol e in th e whit e gea r line s u p wit h
the windo w o n th e cove r an d th e arro w mar k o n th e
cabl e ree l labe l point s straigh t up .
'97-9 8 Models : Rotat e th e cabl e ree l clockwis e unti l i t
stops . The n rotat e i t counterclockwis e (approximatel y
two an d a hal f turns ) unti l th e arro w mar k o n th e cabl e
reel labe l point s straigh t up . Steerin
g Colum n Remova l
CAUTIO N
• Befor e removin g th e steerin g column , firs t discon -
nec t th e connecto r betwee n th e cabl e ree l an d th e
SR S mai n harness .
• I f th e steerin g colum n i s goin g t o b e remove d with -
ou t dismountin g th e steerin g wheel , loc k th e steer -
in g b y turnin g th e ignitio n ke y to 0-LOC K position , o r
remov e th e ke y fro m th e ignitio n s o tha t th e steerin g
whee l wil l no t turn .
NOTE :
• Whe n th e airba g assembl y an d cabl e ree l ar e discon -
nected , an d th e batter y i s reconnecte d an d th e igni -
tion switc h is turne d O N (II) , th e SR S uni t wil l stor e
this a s a n ope n i n th e driver' s airba g inflator , an d th e
SR S indicato r light will com e on. I n suc h a case ,
mak e sur e t o confir m th e DTC , the n clea r th e SR S
unit memory .
• Fo r disconnectin g th e spring-loade d loc k typ e con -
nector , refe r t o pag e 24-10 .
D o no t replac e th e origina l steerin g whee l wit h an y othe r
design , becaus e i t wil l mak e i t impossibl e t o properly
instal l th e airba g (onl y us e genuin e Hond a replacemen t
parts) .
Afte r reassembly , confir m th e wheel s ar e stil l turne d
straight ahea d an d tha t th e steerin g whee l spok e angl e
is correct . I f mino r spok e angl e adjustment is necessary ,
d o s o onl y b y adjustmen t o f th e tie-rods , no t b y remov -
ing an d repositionin g th e steerin g wheel .
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Troubleshooting - '95-9 6 Model s
Self-diagnosti c Procedure s
The self-diagnosti c functio n o f th e SR S syste m allow s i t t o locat e th e cause s o f syste m problem s an d t o stor e thi s informa -
tio n in memory . Fo r easie r troubleshooting, this dat a ca n b e retrieve d vi a a dat a lin k circuit .
Whe n yo u tur n th e ignitio n switc h O N (II) , th e SR S indicator will com e on . I f i t goe s of f afte r si x seconds , th e syste m is
normal .
I f ther e i s a n abnormality , th e syste m locate s an d define s th e problem , store s thi s informatio n i n memory , an d turn s
th e SR S indicato r ligh t on .
NOTE : Th e dat a wil l remai n i n th e memor y eve n whe n th e ignitio n switc h is turne d of f o r i f th e batter y i s disconnected .
Whe n yo u connec t th e SC S servic e connecto r t o th e servic e chec k connecto r (2P) , an d tur n th e ignitio n switc h O N (II) ,
th e SR S indicato r ligh t wil l indicat e th e diagnosti c troubl e cod e (DTC ) b y th e numbe r o f blinks .
Afte r readin g an d recordin g th e DTC , procee d wit h th e troubleshootin g fo r thi s code .
Precaution s
Use onl y a digita l multimete r t o chec k th e system . I f it' s no t a Hond a multimeter , mak e sur e it s outpu t i s 1 0 m A (0.0 1 A )
o r les s whe n switche d t o th e smalles t valu e i n th e ohmmete r range . A teste r wit h a highe r outpu t coul d damag e th e
airba g circui t o r caus e accidenta l airba g deploymen t an d possibl e injury .
Wheneve r th e ignitio n switc h is O N (II) , o r ha s bee n turne d OF F fo r les s tha n thre e minutes , b e carefu l no t t o bum p th e
SR S unit ; th e airbag s coul d accidentall y deplo y an d caus e damag e o r injuries .
Befor e yo u remov e th e SR S mai n harness , disconnec t th e driver' s airba g connector , an d connec t th e shor t connecto r
(RED ) t o th e fron t passenger' s airba g connector .
D o no t touc h a teste r prob e t o th e terminal s i n th e SR S uni t o r harnes s connectors , an d d o no t connec t th e terminal s
wit h a jumpe r wire . Us e onl y th e tes t harnes s an d th e SC S servic e connectors .
Fo r backprobin g spring-loade d loc k typ e connectors , refe r t o pag e 24-12 .
Mak e sur e th e batter y i s sufficientl y charge d (se e sectio n 23 ). I f th e batter y i s dea d o r low , o r th e back-u p powe r circui t
i n th e SR S uni t i s faulty , measurin g value s won' t b e correct . Therefore , i n cas e o f multipl e DTC s includin g DT C 5- 1 (SR S
unit) , replac e th e SR S uni t first , the n troubleshoo t th e othe r code(s) .
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Reading th e DT C
Whe n th e SR S indicato r ligh t i s on , rea d th e DT C usin g on e o f thes e methods :
A . Connec t th e Hond a PG M Teste r t o th e 16 P Dat a Lin k Connecto r (DLC) , an d follo w th e tester' s prompts . I f th e teste r
indicate s n o DTC , double-chec k b y jumpin g th e servic e chec k connecto r an d watchin g th e SR S indicato r ligh t (se e
page 24-15).
DAT A LIN K CONNECTO R (DLC ) (16P )
HOND A PG M TESTE R
24-14
Troubleshooting - '95-96 Models
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3. Norma l (n o failure) , SR S Indicato r Ligh t is :
2
. Intermitten t failure , SR S Indicato r Ligh t is :
Example
s o f DT C Indications :
1. Continuou s failure , SR S Indicato r Ligh t is :
B. Th e SR S indicato r ligh t ca n als o indicat e th e DT C b y th e numbe r o f blink s whe n th e SC S servic e connecto r i s connect -
e d to th e servic e chec k connecto r (2P) .
1 . Tur n th e ignitio n switc h OFF , an d wai t fo r te n seconds . The n connec t th e SC S servic e connecto r t o th e servic e chec k
connecto r (2P) . I f yo u d o no t wai t te n seconds , th e SR S uni t wil l no t b e completel y rese t an d wil l no t outpu t DTCs .
SCS SERVIC E CONNECTO R07PAZ-001010 0
2. Tur n th e ignitio n switc h O N (II) . Th e SR S indicato r ligh t come s o n fo r abou t twelv e second s an d goe s off . The n it wil l
indicat e th e DTC :
Th e DT C consist s o f a mai n cod e an d a sub-code .
Includin g th e mos t recen t problem , u p to thre e differen t malfunction s ca n b e indicated .
I n cas e o f a continuou s failure, the DT C wil l b e indicate d repeatedl y (se e exampl e 1 below) .
I n cas e o f a n intermitten t failure , th e SR S indicato r ligh t wil l indicat e th e DT C on e time , the n it wil l sta y o n (se e exam -
pl e 2 below) .
I f bot h a continuou s an d a n intermitten t failur e occur , bot h DTC s wil l b e indicate d a s continuou s failures .
I n cas e th e syste m is norma l (n o DTC) , th e SR S indicato r ligh t wil l star t blinkin g continuou s shor t blink s (se e exampl e 3) .
3. Rea d th e DTC .
4. Tur n th e ignitio n switc h OFF , an d wai t fo r te n seconds . The n disconnec t th e SC S servic e connecto r fro m th e servic e
chec k connecto r (2P) .
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SCS SERVIC E CONNECTO R07PAZ-001010 0
Troubleshootin g - '95-9 6 Model s
Troubleshootin g Intermitten t Failure s
If ther e wa s a malfunction , bu t i t doesn' t recur , i t wil l b e store d i n th e memor y a s a n intermitten t failure, and th e SR S indi -
cato r ligh t come s on .
Afte r checkin g th e DTC , troubleshoo t a s follows :
1 . Rea d th e DT C (se e "Readin g th e DTC") .
2 . Eras e th e DT C memor y (se e "Erasin g th e DT C Memory") .
3 . Wit h th e shif t leve r i n neutral , tur n th e ignitio n switc h O N (II) , an d le t th e engin e idle .
4 . Connec t th e SC S servic e connecto r t o th e servic e chec k connector . Th e SR S indicato r ligh t wil l blin k continuou s shor t
blinks .
5. Shak e th e wir e harnes s an d th e connector , and/o r tak e a test-driv e (quic k acceleration , quic k braking , cornering ) t o
fin d th e caus e o f th e intermitten t failure . I f th e proble m recurs , th e SR S indicato r ligh t wil l sto p blinkin g an d sta y on .
6 . I f yo u can' t duplicat e th e intermitten t failure , th e syste m is O K a t thi s time . Disconnec t th e SC S servic e connector .
Erasing th e DT C Memor y
To eras e th e DTC(s ) fro m th e SR S unit , us e a Hond a
PG M Teste r (se e th e Hond a PG M Teste r SR S Vehicl e
Syste m Supplement) , o r th e followin g procedure . 1
. Mak e sur e th e ignitio n switc h is OFF .
2 . Connec t th e SC S servic e connecto r t o th e ME S con -
necto r (2P) . D o no t us e a jumpe r wire .
3. Tur n th e ignitio n switc h O N (II) .
4. Th e SR S indicato r ligh t come s o n fo r abou t si x sec -
ond s an d goe s off . Remov e th e SC S servic e connec -
tor fro m th e ME S connecto r withi n fou r second s
after th e SR S indicato r ligh t wen t off .
5 . Th e SR S indicato r ligh t come s o n again . Reconnec t
th e SC S servic e connecto r t o th e ME S connecto r
(2P ) withi n th e fou r second s afte r th e SR S indicato r
ligh t come s on .
6 . Th e SR S indicato r ligh t goe s off . Remov e th e SC S
servic e connecto r fro m th e ME S connecto r (2P )
withi n fou r seconds .
7 . Th e SR S indicato r ligh t indicate s tha t th e memor y i s
erase d b y blinkin g tw o times .
8 . Tur n th e ignitio n switc h OFF , an d wai t fo r te n sec -
onds .
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